Wrench.



o. N. PoLLocK. WRENCH.

.APP'LIUATION FILED DBO. Z1, 1910.

988,142. "Patented 1112111.28, 1911.

CHARLES N'.Y POLLOCK, OF CORINTI-I, MISSISSIPPI.

WRENCH.

To all whom it may concern:

Be it known that I, CHARLES N. PoLLocK,

' a citizen of the United States, residing at Corinth, in the county of Alcorn and State of Mississippi, have invented new and useful Improvements in l/Vrenches, of which the following is a specification.

The invention relates to a wrench, and more particularly to the class of quick adjust-ing wrenches.

The primary object of the invention is the provision of a wrench in which the adjusting screwA may be entirely disengaged from the toothed rack on the shank of said wrench, whereby the movable jaw 'may be freely slid upon said shank for the quick adjustment of the movable aw, so that subsequent thereto accurate adjustment may be had for the gripping of a nut or other part to be turned by t-he wrench.

Another obj ect of the invention is the provision of a wrench in which its movable jaw may be freely slid on the shank of the wrench and accurately adjusted for the gripping of the work to be turned by the wrench.

A. further object of the invention is the provision of a wrench in which a locking pin is arranged, whereby the adjusting screw may be engaged wit-h and disengaged from the toothed rack on the shank of the wrench for the quick and accurate adjustment thereof.

A still further objectof the invent-ion is the provision of a wrench which is simple in construction, thoroughly reliable and edicient in operation, and inexpensive in manufacture.

`With these and other objects in view, the invention consists in the construction, combination and arrangement of parts, as will be hereinafter more fully described, illustrated in the accompanying drawings, and poined out in the claim hereunto appended.

In the drawings: Figure 1 is a side elevation of a wrench constructed in accordance with the invention. Fig. 2 is a similar view thereof, showing the adjusting screw disengaged from the rack teeth on the shank of the wrench. Fig. 3 is an edge view thereof. Fig. 4 is a sectional view on the line 1 4 of Fig. 1.

Similar reference characters indicate corresponding parts throughout the several views of the drawings.

Specification of Letters Patent.

Application filed December 21, 1910.

Patented Mar. 28, 1911.

Serial No. 598,501.

Referring to the drawings by numerals, the wrench comprises a shank 5 terminating at one end in a stationary jaw 6, the opposite end being provided with a suitable handle 7 and this shank is channeled longitudinally on its opposite faces for lightness of construction, while maintaining the necessary strength in the direction in which the strains are transmitted thereto.

Provided at the inner edge of the shank are spaced obliquely disposed rack teeth 8 which are arranged thereon for a greater portion of the length of the shank to be engaged by adjusting means of a movable jaw, as will be hereinafter more fully described.

Surrounding the shank is a sleeve 9 which is adapted .to be reciprocated upon the shank, the sleeve being formed with a movable jaw 10 to coperate with the stationary jaw in gripping the work to be turned by the wrench. This sleeve 9 is formed with a longitudinal bore or guide way correspondingly shaped to the cross sectional area of the shank 5. Thus it will be seen that t-he said sleeve will be held securely against rotation or lateral movement upon the shank, during the traveling thereof on the same.

At a point medially of the length of the sleeve and opening through one longitudinal edge thereof is a recess 11, the same being intersected by a groove 12 which also opens through the edge of the sleeve through which the recess opens, the recess 11 being extended in the sleeve a sufficient distance to intersect the longitudinal bore or guide way in the said sleeve and within which is arranged an adjusting screw 13, the same containing a central bore in which is slidably fitted an axle pin 14, the latter being provided with an outwardly extending proj ection 15 working in the groove 12 and ter-- minating in a finger knob or grip 16, the axle pin 14 being normally engaged in a socket 17 formed in the sleeve 9 and coinciding with the said socket 17 is a further socket 18 which is of less length than the said socket 17 and is disposed outside of the path thereof but opens into the same.

Within the groove 12 in the sleeve 9 is mounted a swinging block 19, the same being connected to the sleeve by means of the pivot 20 engaged therein and in the block, and this block 19 is formed with a central bore 21 opening through its inner end, the bore being extended for a greater portion of the` length of the block, and in which is slid- M seal/12 ably itted the other end ot the slidable axle c pin 111, so that the said pin may be disengaged from the socket 17 and engaged in the socket 18, so that the adjusting screw 13 may be shifted out of engagement With the rack teeth 8 on the shank 5 ot the Wrench. lt is of course to be understood that the normal position of the adjusting screw 13 is in engagement with the rack teeth 8 on the shank of the Wrench.

lillithin the bore 9,1 in the block O and Working against the end of the axle pin 14e slidably fitted within the said bore is a coiled expansion spring :22 which serves to automatically .move the axle pin 13 in a direction for positive engagement in either of the sockets 1? and 13 in the sleeve 9 slidably mounted on the shank of the Wrench.

rlhe finger grip or knob 16 is eut away to 'tori-n a notch 23, so as to permit the tree sliding movement of the axle pin 14 Within the here 21 of the swinging block 19, when it is desired to disengage the adjusting screiv 18 from the rack teeth 8 on the shank ot the wrench.

lVllen the adjusting screw 13 is disengaged from the rack teeth on the shank 5, the sleeve 9 may be 'freely reciproeated thereon for the quick adjustment of the movable javv and thereafter the screw 13 may be engaged with the rack teeth for the accurate adjustment of the movable jaw 10 for the positive gripping of the Work to be turned by the Wrench.

llt is deemed needless to elaborate as to the mode of operation of the Wrench, as it is clearly apparent, and therefore a more eX- tended explanation has been omitted.

llVhat is claimed is:

A Wrench of the class described, compris 40 ing a shank having rack teeth in one edge and a stationary jaw at one end thereof, a sleeve slidably iitted on the shank and having a groove and recess in one edge, the said recess opening into the bore of the sleeve, a swinging block pivotally mounted in the groove and having a bore therein, an axle pin slidablj7 fitted in the bore, the said sleeve being formed with coincident varying lengthened sockets for receiving the pin, an adjusting screw freely rotatable on the pin and normally engaging the rack teeth on the shank, and a finger knob projecting from the axle pin outside of the said groove in the sleeve.

ln testimony whereof l alliz; my signature in presence of two Witnesses.

CHARLES N. POLLOCK.

litnesses R. L. TURNER, R. Y. Jonas.

Uopes of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, 1J. C. 

